Q: What are the prime factors of the number 342,591,620?

 A: 2, 5, 7, 331, 7393

Why are those the prime factors of the number 342,591,620?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 342,591,620

342,591,620
Factor Arrows
2171,295,810
Factor Arrows
285,647,905
Factor Arrows
517,129,581
Factor Arrows
72,447,083
Factor Arrows
3317,393

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 5, 7, 331, 7393

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 331 x 7,393 = 342,591,620

This can also be written as 22 x 51 x 71 x 3311 x 7,3931 = 342,591,620

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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